Three Palestinian workers were buried on Thursday under wreckage of an underground tunnel that collapsed south of the town of Rafah on the border between Gaza Strip and Egypt. Palestinian sources told Kuwait News Agency (KUNA) the smuggling tunnel in al-Brazil neighborhood caved in early today, when the three workers were inside it. He noted that the Civil Defence Forces (CDF), equipped with bulldozers, searched for the missing workers in vain. According to statistics by a Palestinian human rights organizations, more than 190 Palestinians have been killed and 800 others injured due to such accidents at the poorly-established tunnels. Palestinians in the Gaza Strip have, since Israel imposed its blockade on the strip in 2007, have dug hundreds of tunnels across the border with Egypt to bring in food, goods, fuel derivatives and baby milk.